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Triathalon

Jay Hewitt doesn’t really want anyone to think of him as a superhero. But can we help it? Here’s a mere mortal man — who’s had Type 1 diabetes for 16 years — who’s a champion competitor in Ironman triathlons. That’s a 2.4-mile swim, 112-mile bike ride, and a 26.2-mile run, all in one day. He’s a three-time member of the U.S. National Team for Long Course Triathlon, and captain of Team Joslin at the…